GSC Power Division Viton Valve Stem Seals WRX (02-14) STI (04-18) Honda The specs for this satin

The specs for this satin black Neuspeed RSe52 Wheels are 18x8 5x112 45mm Offset with a 57

we can see that it's an Akrapovic - namely

This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles

0T (2012+) F: 1

GSC Power Division Viton Valve Stem Seals WRX (02-14) STI (04-18) Honda The specs for this satinGSC Power Division Viton Valve Stem Seals for the WRX & STI include the entire 6mm valve size seal set (8 intake and 8 Exhaust) so you will have no guess work when it comes to installation. These stem seals are an upgrade from the standard OEM material to help cope with the higher heat caused by high performance Subaru EJ engines. Note: Full set includes 8 intake and 8 exhaust stem seals. For Subaru EJ Turbo Engines only. FITMENT: Subaru STI 2004 2014